JPH0444625Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a lifting device for raising and lowering ring rails, rappet angles, etc. in spinning machines such as ring spinning machines and ring twisting machines.

(Prior art) In general, in this type of spinning machine, in order to form a pipe yarn, the ring rail is gradually raised while repeating the raising and lowering movement of the ring rail while the machine is in operation. A lifting device is also used to raise and lower the equipment. Conventional lifting equipment was developed in 1963, for example.
As shown in Japanese Patent Publication No. 43-29214 published on December 14th, the movement of the lever by the heart cam is the basis, and the lifting of the ring rail etc. is carried out actively by the displacement of the cam, but the lowering is This was a method that was carried out passively by the weight of the ring rail.

(Problems to be Solved by the Invention) In the conventional device, when the lifting speed of the ring rail increases, the movement of the ring rail cannot follow the displacement curve of the cam at the point where it changes from rising to falling, and the movement of the ring rail cannot follow the displacement curve of the cam, although for a short time. This causes a so-called "breathing" phenomenon in which the fibers temporarily stop, often causing disturbances in the formation of the tube and thread. In particular, if fluff or the like accumulates on the pillar pillars of the ring rail during operation, this phenomenon tends to be exacerbated by the frictional resistance.

In addition, conventional lifting devices are connected to the spindle and draft part drive system by a gear transmission mechanism, and when performing filling building, a change gear is used to change the amount that the ring rail moves up and down each time and the amount of hoisting per time. However, there was a problem in that it required replacing the heart cam or the saver wheel, and it took time and effort to change the operating conditions.

In order to solve these problems, the applicant of the present application has developed a system for actively raising and lowering ring rails, etc. by rotating the line shaft forward and backward using a motor for driving the spindle and draft part and a separate drive motor. Invented a lifting device. However, since the moments of inertia of the spindle drive system and line shaft drive system are significantly different, if the power supply to the motors of the spindle drive system and line shaft drive system is stopped at the same time during a power outage, the spindle drive will continue even after the line shaft drive system has stopped. The system is driven for a while. Therefore, the yarn is wound at the same position on the pipe yarn, causing problems such as frequent yarn breakage when stopping and restarting, or loop missing when rewinding in the winding process.

Structure of the invention (means for solving the problem) In order to solve the above-mentioned problem, in this invention, the ring rail, etc. is actively driven up and down by forward and reverse rotation of the line shaft, and the amount of lifting and lowering of the ring rail is controlled. The amount of hoisting is changed by an electric signal, and the spindle drive system and line shaft drive system are stopped in synchronization during a power outage. Specifically, a line shaft arranged in the longitudinal direction of the machine is provided with a gear that rotates integrally with the line shaft,
A lifting means that engages with the gear and raises and lowers the pillar in response to forward and reverse rotation of the line shaft is provided on a pillar supporting the ring rail, etc., and a power transmission mechanism is provided between the draft part drive system and the line shaft. A clutch mechanism for switching the direction of rotation of the line shaft between forward rotation and reverse rotation is interposed in the middle of the power transmission mechanism that transmits the rotation of the draft part drive system to the line shaft, and the power supply for the clutch mechanism is connected to the power transmission mechanism. It has two systems, a regular power source and an emergency power source, and is equipped with a switching device that automatically switches to the emergency power source in the event of a power outage.

(Function) In this invention, the rotation of the draft part drive system is transmitted to the line shaft, and the struts supporting the ring rail etc. are moved up and down through the lifting means that engages with the gear that rotates integrally with the line shaft. The forward and reverse rotation of the line shaft is changed by turning on and off a clutch mechanism interposed between the draft part drive system and the line shaft. Set by electrical control of the clutch mechanism. Further, in the event of a power outage, the clutch mechanism is activated by the emergency power source, and the rotation of the draft part drive system is input to the power transmission mechanism, so the line shaft is driven in synchronization with the spindle and the draft part until it stops.

(Example) Below are examples 1 to 3 that embody this idea.
This will be explained according to the diagram.

Inside the spindle rail 1 (shown in FIG. 2), a pair of left and right line shafts 2 are rotatably disposed along the longitudinal direction of the machine, that is, parallel to the spindle rail 1, and the line shafts 2 are equipped with screw gears. 3 and a bevel gear 4 are fitted together so that they can rotate together. As shown in FIG. 2, a poker pillar 6 serving as a support supporting the ring rail 5 is supported on the spindle rail 1 via a slide guide 7 so as to be slidable in the vertical direction. spindle rail 1
At a position corresponding to the lower part of the slide guide 7, a nut body 8 constituting a lifting means is rotatably supported by a bearing 9 on its upper outer periphery. A screw portion 6a formed at the lower part of the poker pillar 6 is screwed into the nut body 8, and a screw gear 10 that meshes with the screw gear 3 is fitted and fixed to the lower end. Further, a poker pillar 12 that supports the rappet angle 11 is supported so as to be slidable in the vertical direction with respect to the machine frame via a slide guide (not shown). The poker pillar 12 is rotatably supported by the frame via a bearing (not shown), and has a lower end attached to a nut body 13 fitted with a bevel gear 14 that meshes with the bevel gear 4 at the lower end. A screw portion 12a is screwed in.

There is a main gear ring 17 as a draft part drive system that transmits the rotation of a driving shaft (chimpully shaft) 15 driven by a main motor (not shown) to a front roller 16 of the draft part, and a line shaft 2. A differential gear mechanism 18 is provided. Differential gear mechanism 18
As shown in FIG. 3, the sun gear 20 is fitted onto the input shaft 19, the input gear 21 and the output gear 22 are rotatably attached to the input shaft 19 on both sides of the sun gear 20, and the input gear 21 and an internal gear 23 integrally formed with the sun gear 20 and rotatably supported on the side surface of the output gear 22.
and a planetary gear 24 that meshes with the internal gear 23. The rotation of the main gear ring 17 is transmitted to the input gear 21 via a gear train 25, and the input shaft 19 is rotationally driven in one direction by a control motor M consisting of a variable speed motor.

An intermediate shaft 27 is rotated via a gear 26 that meshes with the output gear 22, and a bevel gear 29 that meshes with a bevel gear 28 that is fitted and fixed to each end of the line shaft 2 is fitted and fixed to both ends of the intermediate shaft 27. Between a worm wheel 31 fixed to the center of the rotating shaft 30 and an intermediate shaft 33 having a worm 32 that meshes,
The rotation direction of the line shaft 2, that is, the intermediate shaft 33
A clutch mechanism 34 is interposed to switch the rotation direction of the clutch between a forward rotation direction and a reverse rotation direction. The clutch mechanism 34 includes a rising clutch MC1 and a descending clutch that connect/disconnect transmission of rotation to the intermediate shaft 33 from gear trains 35 and 36 disposed between the intermediate shafts 27 and 33, and change the direction of rotation of the intermediate shaft 33. Equipped with MC2. Further, an intermediate shaft 33 is provided at the end of the intermediate shaft 33.
Rotary encoder 37 that detects the rotation speed of 3
The output signal of the encoder 37 is inputted to a control device 38 which controls the operation of both clutches MC1, MC2 and the control motor M.

The power supply for both clutches MC1 and MC2 consists of two systems, a regular power supply and an emergency power supply, and a switching device (not shown) built in the power supply box 39 automatically switches to the emergency power supply in the event of a power outage. ing. Battery as an emergency power source,
Charged capacitors, generators, etc. are used.

Next, the operation of the apparatus configured as described above will be explained. When the machine is operated, the main gear ring 17
The rotation is transmitted through the gear train 25 to the input gear 21 of the differential gear mechanism 18 as rotation in a constant direction (normal rotation in this embodiment), and becomes the reference speed for lifting. On the other hand, the control motor M is driven by a driving command from the control device 38, and the input shaft 19 is rotationally driven. The control device 38 detects the rotation speed of the intermediate shaft 33 based on the detection signal from the rotary encoder 37, and controls the control motor M to drive the control motor M at variable speeds so that the rotation speed is the same as a preset value. The rotations of the input shaft 19 and the input gear 21 are combined by the differential gear mechanism 18, and the output gear 22 is rotated in the normal direction. Both line shafts 2 are rotated via the shaft 30 and bevel gears 28, 29. When the lifting clutch MC1 of the clutch mechanism 34 is energized, the intermediate shaft 33 is rotated in the normal direction via the gear train 35 and the lifting clutch MC1, and the line shaft 2
is also rotated forward. When the line shaft 2 rotates in the normal direction, the screw gear and the bevel gear 4 also rotate in the normal direction, and the gears 3 and 4
The nut bodies 8, 13 are rotated forward by the action of the screw gear 10 and the bevel gear 14 which are engaged with the nut bodies 8, 13, and the poller pillars 6, 12 are moved upward by the action of the screw parts 6a, 12a which are threaded with the nut bodies 8, 13. When the rotation amount of the intermediate shaft 33 reaches the set value according to the detection signal from the rotary encoder 37, the control device 3
8 demagnetizes the ascending clutch MC1 and energizes the descending clutch MC2. As a result, the intermediate shaft 33 is driven in the reverse direction via the gear train 36 and the lowering clutch MC2, the line shaft 2 is also rotated in the opposite direction, and the poker pillars 6 and 12 are moved downward together with the ring rail 5 and the rappet angle 11.

That is, the line shaft 2 is driven forward or backward by the engagement and disengagement of both clutches MC1 and MC2, and the ring rail 5 and rappet angle 11 are moved up and down together with the poker pillars 6 and 12. Therefore, unlike conventional devices that require replacement of the change gear or heart cam when changing the 1-chase amount, it is possible to input settings to the control device 38 that controls the excitation and demagnetization of the ascending clutch MC1 and descending clutch MC2. By changing this, it becomes possible to change the setting of one chase amount very easily. Further, since the output of the differential gear mechanism 18 is the rotation speed difference between the input gear 21 and the output shaft 19, the rotation of the control motor M is controlled by changing the speed using the rotation of the main gear ring 17, that is, the rotation speed of the spindle as a reference speed. This makes it possible to freely change the speed of the rotation of the output gear 22 during the ascent or descent of the first chain, and the shape of the tube can be changed as necessary to meet the requirements of the winding process using electrical control. It becomes possible to do it arbitrarily with only one.

If the power supply to the main motor and control motor M is stopped due to an abnormal situation such as a power outage while the machine is in operation, the machine will enter inertial operation. When comparing the moment of inertia of the spindle and draft part drive system with the moment of inertia of the line shaft drive system,
Since the moment of inertia of the line shaft drive system is much smaller, if the spindle drive system and line shaft drive system are completely separated, the line shaft drive system will stop first, then the spindle drive system will stop, and the ring Even after the rail stops, the spindle and draft part continue to rotate, and the thread is wound at the same position on the pipe thread. However, in this device, the power of the ascending clutch MC1 and descending clutch MC2 is switched to the emergency power supply by the action of the switching device in the power supply box 39 at the same time as a power outage, and the clutch mechanism 34 operates in the same way as in normal times. Rotation of the spindle and draft part drive system is transmitted to the line shaft side via the differential gear mechanism 18 and clutch mechanism 34. Therefore, even if the control motor M side stops quickly during a power outage, the main gear ring 17
The rotation from the spindle is transmitted to the line shaft 2 via the differential gear mechanism 18 and the clutch mechanism 34, and the spindle and ring rail are driven in a synchronous state until they come to a stop, and lifting is performed correctly for each chain.

Note that this invention is not limited to the above-mentioned embodiments; for example, instead of attaching the rotary encoder 37 to the intermediate shaft 33, the rotary encoder 37 may be attached to the rotating shaft 30 or the line shaft 2.

Effects of the invention As detailed above, according to this invention, the ring rail etc. are both raised and lowered actively in response to the forward and reverse rotation of the line shaft.
Operation is reliable, and unlike conventional cam-type lifting devices, there is no breathing phenomenon even during high-speed operation. Furthermore, unlike conventional devices, the settings for the amount of rise, fall, or hoisting can be changed each time, and there is no need to replace the chain gear, heart cam, etc.
This can be easily done by simply changing the input values for the operating times of the ascending clutch and descending clutch. Furthermore, in the event of a power outage, the spindle drive system and line shaft drive system are driven in synchronization until the machine stops, and lifting is performed correctly for each chase. This eliminates the problem of the wheel coming off when rewinding.

[Brief explanation of the drawing]

Figures 1 to 3 are views showing an embodiment embodying this invention, with Figure 1 being a perspective view, Figure 2 being a side view showing the elevating means, and Figure 3 being a partially broken view showing the drive system. FIG. Line shaft...2, Screw gear...3, Ring rail...5, Polka pillar...6, Nut body...8, Main gear ring...17, Differential gear mechanism...18, Control motor...M, Rise Clutch for use...MC1, clutch for descent...MC2.

Claims (1)

[Scope of claim for utility model registration] 1. A line shaft arranged in the longitudinal direction of the machine is provided with a gear that rotates integrally with the line shaft,
A lifting means that engages with the gear and raises and lowers the pillar in response to forward and reverse rotation of the line shaft is provided on a pillar supporting the ring rail, etc., and a power transmission mechanism is provided between the draft part drive system and the line shaft. A clutch mechanism is installed in the middle of the power transmission mechanism that transmits the rotation of the draft part drive system to the line shaft, and switches the rotation direction of the line shaft between forward rotation and reverse rotation.
A lifting device for a spinning machine, which has two power sources for the clutch mechanism, a regular power source and an emergency power source, and is equipped with a switching device that automatically switches to the emergency power source in the event of a power outage. 2. The lifting device for a spinning machine according to claim 1, wherein the emergency power source is a battery. 3. The lifting device for a spinning machine according to claim 1, wherein the emergency power source is a charged capacitor. 4. The lifting device for a spinning machine according to claim 1, wherein the emergency power source is a generator.